/**********************************************************************
 * SailmiPIM - modular cross-platform feature Personal Information Manager Tools.
 * Copyright(C) 2010-2011  Oleg Linkin
 *
 * Distributed under the Boost Software License, Version 1.0.
 *(See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 **********************************************************************/

#pragma once

#include <memory>
#include <QWidget>
#include <QIcon>
#include <QTabBar>
#include <QPointer>
#include <QAction>
#include <QMap>
#include <QMenu>
#include <sailmipim/iinfo.h>
#include <sailmipim/core/icoretabwidget.h>
#include "sailmipim/core/ihookproxy.h"

class QMenu;
class QStackedWidget;
class QVBoxLayout;
class QHBoxLayout;
class QToolButton;
class QToolBar;

namespace SailmiPIM
{
	class MainWindow;
	class SeparateTabBar;

	class SeparateTabWidget : public QWidget
							, public ICoreTabWidget
	{
		Q_OBJECT
		Q_INTERFACES(ICoreTabWidget)

		MainWindow *Window_ = 0;

		int LastContextMenuTab_ = -1;
		QMenu *AddTabButtonContextMenu_;
		QPointer<QStackedWidget> MainStackedWidget_;
		QPointer<SeparateTabBar> MainTabBar_;
		QPointer<QToolButton> AddTabButton_;
		QPointer<QToolBar> LeftToolBar_;
		QPointer<QToolBar> RightToolBar_;
		QPointer<QHBoxLayout> MainTabBarLayout_;
		QPointer<QHBoxLayout> MainToolBarLayout_;
		QVBoxLayout *MainLayout_;
		QAction *DefaultTabAction_;
		QList<QPointer<QAction>> TabBarActions_;

		QWidget *CurrentWidget_ = 0;
		int CurrentIndex_ = -1;
		QWidget *PreviousWidget_ = 0;
		QToolBar *CurrentToolBar_ = 0;

		QStringList TabNames_;

		QHash<QWidget*, QPointer<QWidget>> SavedWidgetParents_;
	public:
		explicit SeparateTabWidget(QWidget *parent = 0);
		void SetWindow(MainWindow*);

		QObject* GetQObject();

		int WidgetCount() const;
		QWidget* Widget(int index) const;

		QList<QAction*> GetPermanentActions() const;

		QString TabText(int index) const;
		void SetTabText(int index, const QString& text);

		QIcon TabIcon(int index) const;
		void SetTabIcon(int index, const QIcon& icon);

		QString TabToolTip(int index) const;
		void SetTabToolTip(int index, const QString& toolTip);

		QWidget* TabButton(int index, QTabBar::ButtonPosition positioin) const;
		QTabBar::ButtonPosition GetCloseButtonPosition() const;
		void SetTabClosable(int index, bool closable, QWidget *closeButton = 0);

		void SetTabsClosable(bool closable);

		void AddAction2TabBar(QAction *action);
		void InsertAction2TabBar(int position, QAction *action);
		void InsertAction2TabBar(QAction *before, QAction *action);

		void AddWidget2TabBarLayout(QTabBar::ButtonPosition pos, QWidget *action);
		void AddAction2TabBarLayout(QTabBar::ButtonPosition pos, QAction *action);
		void InsertAction2TabBarLayout(QTabBar::ButtonPosition pos, QAction *action, int index);
		void RemoveActionFromTabBarLayout(QTabBar::ButtonPosition pos, QAction *action);

		int CurrentIndex() const;
		QWidget* CurrentWidget() const;

		QMenu* GetTabMenu(int);

		int IndexOf(QWidget *page) const;

		int GetLastContextMenuTab() const;

		void SetAddTabButtonContextMenu(QMenu *menu);

		SeparateTabBar* TabBar() const;

		int AddTab(QWidget *page, const QString& text);
		int AddTab(QWidget *page, const QIcon& icon, const QString& text);
		int InsertTab(int index, QWidget *page, const QString& text);
		int InsertTab(int index, QWidget *page,
				const QIcon& icon, const QString& text);
		void RemoveTab(int index);

		void AddWidget2SeparateTabWidget(QWidget *widget);
		void RemoveWidgetFromSeparateTabWidget(QWidget *widget);

		int TabAt(const QPoint& point);

		void MoveTab(int from, int to);

		QWidget* GetPreviousWidget() const;
	protected:
		void resizeEvent(QResizeEvent *event);
		void mousePressEvent(QMouseEvent *event);
	private:
		void Init();
		void AddTabButtonInit();
	public slots:
		void setCurrentIndex(int index);
		void setCurrentTab(int tabIndex);
		void setCurrentWidget(QWidget *widget);
		void handleNewTabShortcutActivated();
		void setPreviousTab();
	private slots:
		void handleTabBarPosition();
		void handleSelectionBehavior();
		void handleAddDefaultTab();
		void handleCloneTab();
		void handleTabMoved(int from, int to);
		void handleContextMenuRequested(const QPoint& point);
		void handleActionDestroyed();
		void releaseMouseAfterMove(int index);
	signals:
		void tabInserted(int index);
		void tabWasRemoved(int index);
		void tabCloseRequested(int index);
		void newTabMenuRequested();
		void currentChanged(int index);
		void tabWasMoved(int from, int to);

		// Hook
		void hookTabContextMenuFill(SailmiPIM::IHookProxy_ptr proxy,
				QMenu *menu, int index, int windowsId);
		void hookTabFinishedMoving(SailmiPIM::IHookProxy_ptr proxy,
				int index,
				int windowId);
		void hookTabSetText(SailmiPIM::IHookProxy_ptr proxy,
				int index,
				int windowId);
		void hookTabIsRemoving(SailmiPIM::IHookProxy_ptr proxy,
				int index,
				int windowId);
	};
}
